Hello there, @madeline_gorley ...
Submitting a Feature Idea is the right way to go...rather than posting in this particular space of the Community website. I'm assuming that you've already found the area to do this...which is via the PRODUCT menu at the top of any page here in the Community...and then selecting IDEA CONVERSATIONS. Then, you'd click on "Suggest an idea". I also see that you posted a response here: New Quizzes Question Type - Drawing - Page 3 - Canvas Community. So, since there is an existing Feature Idea already created, you'd want to follow that conversation instead of creating a new one...to avoid duplication of Feature Ideas. You had asked in that thread how to vote "Yes" for that Feature Idea. Well, there isn't a way to say, "Yes", but you can give it a star rating.
There are a couple Guides that I'd like to direct your attention to. Sometimes we would like Instructure (the company that makes Canvas) to be able to develop every idea that we have to make Canvas better, but that doesn't always happen...and sometimes not in the time frame that we'd like.
Here are a couple Guides that address the star rating system, how our feedback is gathered from multiple sources, and how their development process works:
I hope this will be of some help to you. Let Community members know if you have any other questions about this...thanks! Take care, stay safe, and be well.